package com.sky.service.impl;

import com.fasterxml.jackson.databind.util.BeanUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.PutMapping;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //  后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
    *   新增员工
    *
    */
    public void save(EmployeeDTO employeeDTO){
        Employee employee = new Employee();

        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //设置默认密码,默认为123456
        employee.setPassword(DigestUtils.md5DigestAsHex
                (PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置账号的状态，默认为正常状态，1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);

        //有了 @AutoFill 就不需要下面的代码了
//        //设置当前记录的创建时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //设置id为当前用户登录的Id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        //添加员工
        employeeMapper.insert(employee);
    }


    /*
    *员工查询
    *
    **/
    public Employee queryById(Integer id){

        Employee employee = employeeMapper.queryById(id);

        employee.setPassword(PasswordConstant.PROTECT_PASSWORD);

        if(employee == null){
            //查询结果为空，则返回空
            return null;
        }

        return employee;
    }

    /*
    * 启用禁用员工账号
    * */
    public void status(Integer empstatus,Long id) {
        //两个注意点 ：  1:这里不要直接将 >=2 的 参数直接传给dao层，应该使用对象的形式传参
        //            2:下面的是传统的填充对象形式
//        Employee employee = new Employee();
//        employee.setStatus(empstatus);
//        employee.setId(id);
        //这是   链式传参(以后编程发展的主流)    好像是使用生产者
        Employee employee = Employee.builder()
                .status(empstatus)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }

    /*
    * 员工分页查询
    *
    * */
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    /*
    * 编辑员工信息
    * */
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();

        BeanUtils.copyProperties(employeeDTO,employee);

        employeeMapper.update(employee);
    }


}
